World Academy of Science, Engineering and Technology
Published February 21, 2010 | Version 5637
Journal article Open

Treatment of Wool Scouring Waste Using Anaerobic Digestion with and without Chemicals Addition

Creators

Description

The aim of this study was to investigate the effectiveness of anaerobic digestion for the treatment of wool scouring wastes. The experiments design comprised three ratios of waste (W) to seed(S) (W:S) of 25:75, 50:50 and 75:25, corresponding to 1.9. 1.7 and 1.5g tCOD/g TS, respectively, with or without chemicals addition. NH4Cl was added to the reactors as a source for nitrogen to achieve C:N:P of 420:14:3. A cationic flocculent was added at 0.5 and 0.75% to enhance flocculation of sludge. The results showed that the reactors that received W:S at a ratio of 25:75 produced the largest volume of biogas. The final soluble COD (sCOD) was below the limits for discharge to the sewer system.

Files

5637.pdf

Files (142.2 kB)

Name Size Download all
md5:aa5e6f198b7265df7918537abe4fa172
142.2 kB Preview Download

Additional details

References

  • Christoe, J.R. (1977) Treatment of wool-scouring effluents with inorganic chemicals. J.Wat.Pollut. Control.Fed. 49, 848-853.
  • McLachlan C.N.S., Smith D.K.W., Webb R.J. (1978a) the treatment of woolscour effluent- 1. Removal of colloidal dirt. Wat. Res. 14, 729-733.
  • McLachlan C.N.S., Smith D.K.W., Fieldes R.B. (1978b). The treatment of woolscour effluent- 2. Grease removal by alcohol extraction. Wat. Res. 14, 735-740.
  • Stewart R.G. (1985) Woolscouring and Allied Technology, 2nd edition. Caxton Press, Christchruch.
  • Gibson, J.D.M., Morgan W.V., Robinson B (1982) Wool scouring and effluent treatments. Wool Sci. Rev.57, 1-32.
  • Cail, R.G., Barford, J.P., Lichacz,R. (1986) Anaerobic digestion of wool scouring wastewater in a digester operated semi-continuously for biomass retention, Agricultural Wastes. 18, 27-38.
  • American Public Health Association. (1998). Standard Methods for the Examination of Water and Wastewater (19th ed). Washington, DC: United Book Press.
  • Demirer, G.N., Chen, S.(2005) Two-phase anaerobic digestion of unscreened dairy manure. Proc. Biochem. 40, 3542-3549.
  • Demirer, G.N., Othman, M. (2008) Two-phase thermophilic acidification and mesophilic methanogenesis anaerobic digestion of waste-activated sludge. Environ.Eng.Sci. 25, 1291-1300.